1、 名词性从句讲解在复合句中起名词作用的从句叫做名词性从句。它包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。分析历届高考试题名词性从句考查的焦点主要有以下六个方面1. 考查名词性从句的语序问题2. 考查引导词 that 与 what 的区别3. 考查 it 在名词性从句中作形式主语或形式宾语的用法4. 考查 whether 与 if 的区别5. 考查名词性从句中的疑问词+ever 引导的名词性从句与 no matter+疑问词引导的状语从句的区别6. 考查名词性从句的虚拟语气问题语法要点剖析一、名词性从句
2、主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。因此，这四种从句通称为名词性从句。引导名词性从句的连接词可分为三类：连接词：that, whether, if （不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which.连接副词：when, where, how, why1. 主语从句作句子主语的从句叫主语从句。主语从句通常由从属连词 that，whether，if 和连接代词what，who，which，whatever，whoever 以及连接副词 how，when ，where，wh
3、y 等词引导。that 在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如：What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。有时为避免句子头重脚轻，常用形式主语 it 代替主语从句作形式主语
4、放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下：（1）It + be + 名词 + that 从句 （2）It + be + 形容词 + that 从句（3）It + be + 动词的过去分词 + that 从句 （4）It + 不及物动词 + that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：It is necessary (important, natural, strange, etc.) that It is a pity (a shame, no wonder
5、, etc.) that It is suggested (requested, proposed, desired, etc.) that2. 宾语从句名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。1. 由连接词 that 引导的宾语从句由连接词 that 引导宾语从句时，that 在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的 that 不可省。例如：He has told me that he will go to Shanghai tomorrow. 他
6、已经告诉我他明天要去上海。We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。注意：在 demand、order、suggest、decide、insist, desire, demand, request, command 等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should） + 动词原形” 。例如：I insist that she (should) do her work alone. 我坚持要她自己工
7、作。The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。2. 用 who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever 等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。例如： I want to know what he has told you. 我想知道他告诉了你什么。 She always thinks of how she can work well. 她总是在想怎样
8、能把工作做好。She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持。3. 用 whether 或 if 引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序。此外，whether 与 if 在作“是否”的意思讲时在下列情况下一般只能用 whether，不用 if：a. 引导主语从句并在句首时；b. 引导表语从句时；c . 引导从句作介词宾语时；d. 从句后有“or not”时；e. 后接动词不定式时。例如： Whether there is life on the moon is an interest
9、ing question. 月球上有没有生命是个有趣的问题。Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。4. 注意宾语从句中的时态呼应，当主句动词是现在时，从句根据自身的句子情况，而使用不同时态。例如： he studies English every day. （从句用一般现在时）he studied English last term. （从句用一般过去时）I know (that) he will study English next year. （从句用一般将来时）he has studied En
10、glish since 1998. （从句用现在完成时）当主句动词是过去时态（could, would 除外） ，从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。例如：The teacher told us that Tom had left us for America 5. think, believe, imagine, suppose 等等动词引起的否定性宾语从句中，要把上述主句中的动词变为否定式。即将从句中的否定形式移到主句中。例如： We dont think you are here. 我们认为你不
11、在这。I dont believe he will do so. 我相信他不会这样做。3. 表语从句在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用 as if 引导。其基本结构为：主语 + 系动词 + that 从句。例如：The fact is that we have lost the game. 事实是我们已经输了这场比赛。That is why he didnt come to the meeting. 那就是他为什么不到会的原因。It looks as if it is going to rain. 看上去天要下雨了。
12、需要注意的，当主语是 reason 时，表语从句要用 that 引导而不是 because。例如：The reason why he was late was that he missed the train by one minute this morning. 4. 同位语从句同位语从句说明其前面的名词的具体内容。同位语从句通常由 that 引导，可用于同位语从句的名词有advice、 demand、doubt、fact 、hope、idea、information、message 、news、order、problem、promise、question、request、suggestio
13、n、truth、wish、word 等。例如：The news that we won the game is exciting. 我们赢得这场比赛的消息令人激动。I have no idea when he will come back home. 我不知道他什么时候回来。The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了。同位语从句和定语从句的区别： that 作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略； that 引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分
14、，一般不能省略。 试比较下面两个例句: I had no idea that you were here （that 引导同位语从句，不能省略）Have you got the idea（that） this book gives you of life in ancient Greece？（that 引导定语从句，作宾语，可以省略）名词性从句1. His success was because of _ he had been working hard.A. that B. the fact which C. the fact that D. the fact2. “Is Mary from
15、 New York City” “I dont know _.”A. from what city does she come from B. from what city she comeC. what city does she come from D. what city she comes from3. _ makes mistakes must correct them.A. What B. That C. Whoever D. Whatever4. The reason why I didnt go to Shanghai was _ a new job.A. because I
16、got B. because of getting C. I got D. that I got5. It worried her a bit _ her hair was turning grey.A. while B. that C. if D. for 6. Henry killed the dog. Ill ask him why _.A. did he do that B. he did that C. he did D. he has done so 7. Have you seen Henry lately My boss wants to know _.A. how he is
17、 getting along B. how is he getting alongC. what he is getting along D. what is he getting along8. It is generally considered unwise to give a child _ he or she wants.A. however B. whatever C. whichever D. whenever9. He asked me _ with me.A. what is the trouble B. what wrong wasC. what was the matte
18、r D. what trouble it is10. I am sure _ he said is true.A. that B. about that C. of that D. that what11. When and why he came here _ yet.A. is not known B. are not known C. has not known D. have not bee12. I wonder how much _.A. does the watch cost B. did the watch costC. the watch costed D. the watc
19、h costs13. Mary is _ someone might recognize her.A. afraid of B. afraid about C. afraid that D. afraid for14._ is no reason for dismissing her.A. Because she was a few minutes late B. Owing to a few minutes lateC. The fact that she was a few minutes late D. Being a few minutes late15. They came to t
20、he conclusion _ by a computer.A. that not all things can be done B. because of not all things be doneC. being not all things can be done D. because not all things can be done16. Why the explosion occurred was _ the laboratory attendant had been careless.A. for B. because C. since D. that17. I dont d
21、oubt _ hell come.A. that B. if C. what D. whether18. “Why did you go to the wrong class, Mr. Wang”“Well, I forget _ I was supposed to go to.”A. which the room B. which room C. what was the room D. what room was it19. Output is now six times _ it was before liberation.A. that B. which C. what D. of w
22、hich20. Mary: Helen is a mere washer woman, yet shes now buying a big house.Carol: Yes. Because shes always saved _.A. what little she earns B. how little she earnsC. for little she earns D. with little she earns21. _ surprised me most was _ such a little boy of seven could play the violin so well.A
23、. Thatwhat B. Whatthat C. Thatwhich D. Whatwhich22. We gave him _ help we could.A. which B. what C. that D. this23. She is pleased with what you have given him and _ you have told him.A. that B. which C. all what D. all that 24. Excuse me would you please tell me _ A. when the sports meet is taken p
24、lace B. when is the sports meet going to be heldC. when is the sports meet to begin D. when the sports meet is to take place25. Do you happen to know _ A. what size shoes he wears B. how big shoes he wearsC. what is the size of his shoes D. what number shoes are his26. This book will show you _ can
25、be used in other contexts.A. how you have observed B. how what you have observedC. that you have observed D. how that you have observed27. Where do you think _ A. has he gone B. has he been C. hes gone D. was he28. Do you know _ A. how many populations there are in the world B. how much population t
26、here is in the worldC. how many the population of the world isD. what the population of the world is29. Would you go and see _ outside A. what to take place B. what Tom has happenedC. what is happening D. what the matter had been30. The subject of “What is interesting is that I do not even know him.
27、“ is_.A. what B. interesting C. What is interesting D. I【能力强化】31. _ I think he is Charles.A. Who do you think he is B. Do you think who he isC. Whom do you think he is D. Do you think who he is32. He didnt know which room _.A. they lived B. they lived in C. did they live D. did they live in33. The l
28、ittle boy ate _ his mother gave him.A. that B. which C. whatever D. no matter what34. The city is no longer _. A. what it is B. that it used to be C. which it was D. what it used to be35. My parents used _ they had to get a new car for me.A. which B. that C. what D. all what36. _ we go swimming ever
29、y day _ us a lot of good.A. Ifdo B. Thatdo C. Ifdoes D. Thatdoes37. _ was the idea _ the wife thought of A. Whatthat B. Thatwhat C. Howwhy D. Whyhow38. _ did he tell his wife _ he wished to do A. Thatwhat B. Whatthat C. Wherewhich D. Whichwhere 39. One of the men held the view _ the book said was ri
30、ght.A. what that B. that what C. that which D. which that40. I have no idea _ or not he has finished the work.A. if B. that C. whether D. which41. “Do you know _” “His father is a doctor.”A. what is his father B. who is his fatherC. what his father is D. who his father is 42. Is this _ we met each o
31、ther two years ago A. place B. place in which C. where D. place which43. It _ Bob drives badly.A. thinks that B. is thought what C. thought that D. is thought that44. We all know the truth _ there are air, water and sunlight there are living things.A. where B. wherever C. that D. that wherever 45. T
32、hey discussed _ they could settle the problem without others help.A. if B. that C. what D. whether46. She asked _.A. what I was doing when she rang me up B. what was I doing when she rang me upC. when she rang me up what I was doing D. when did she ring me up what I was doing47. May I borrow the rin
33、g You can take _ you like.A. no matter what B. which C. whichever D. that 48. He said that he was fond of _.A. what beautiful is B. what is beautiful C. beautiful is what D. what it is beautiful49. He insisted that he _ in good health and _ to work there.A. was, be sent B. is, is sent C. be, was sen
34、t D. be, send50. Do you know _ he expects will give us a talk A. who B. whom C. that D. whose【每日一练】A strange thing happened to Henry yesterday. He was on a bus and to _1_. So he stood up and rang the bell. _2_ make sure the driver heard him, he rang it twice, but the bus _3_ stop. And the conductor
35、came and shouted _4_ him.The conductor was _5_ angry and spoke _6_ fast that Henry didnt understand _7_. The bus stopped at the next bus and Henry got off. As he got off he heard someone said, “ I think he _8_ a foreigner.”When Henry got _9_, he told his wife about it.“ _10_ times did you ring the b
36、ell?” his wife asked.“ Twice,” said Henry.“ Well, thats the signal (信号) _11_ the driver _12_ on.” His wife explained, “only the conductor _13_ to ring the bell twice. Thats why the conductor _14_ so angry!”Henry nodded（点头）. “ _15_,” he said.1. A. got off B. gets off C. get off D. get on2. A.To B. At
37、 C. In D. with3. A. doesnt B. dont C. didnt D. wasnt4. A. in B. on C. of D. at5. A. so B. as C. at D. because6. A. so that B. that C. so D. why7. A. words B. a word C. speech D. song8. A. was B. isnt C. is D. am9. A. to home B. at home C. in home D. home10. A. How many B. How much C. How long D. How
38、 11. A. to B. at C. on D. for 12. A. to go B. go C. went on D. goes13. A. allowed B. is allowed C. was allowed D. allow14. A. got B. gets C. is getting D. gotten15. A. I seen B. I saw C. I see D. I did阅读理解Miss Gorgers taught physics in a New York school. Last month she explained to one of her classe
39、s about sound, and she decided to test them to see how successful she had been in her explanation. She said to them, “Now I have a brother in Los Angeles. If I was calling him on the phone and at the same time you were 75 feet away, listening to me from across the street, which of you would hear wha
40、t I said earlier, my brother or you and for what reason?” Tom at once answered, “Your brother. Because electricity travels faster than sound waves.” “Thats very good,” Miss Gorgers answered; but then one of the girls raised her hand, and Miss Gorgers said. “Yes, Kate.” “I disagree,” Kate said. “Your
41、 brother would hear you earlier because whenits 11 oclock here its only 8 oclock in Los Angeles.” 61. Miss Gorgers was teaching her class_. A. how to telephone B. about electricity C. about sound D. about time zone(时区)62. Miss Gorgers raised this question because she wanted to know whether_. A. her
42、students had grasped her lesson B. her student could hear her from 75 feet away C. sound waves were slower than electricity D. it was easy to phone to Los Angeles 63. Tom thought that electricity was _. A. faster than sound waves B. slower than sound wavesC. not so fast as sound waves D. as fast as
43、sound waves 64.Kate thought Tom was wrong because _. A. electricity was slower than sound waves B. clocks in Los Angeles showed a different time from those in New YorkC. Tom was not good at physics at all D. Toms answer had nothing to do with sound waves 65.Whose answer do you think is correct according to the law of physics? A. Toms B. Kates C. Both A and B D. Neither A nor B
